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PARTS CATALOGUE / TECHNICAL GUIDE
[SPECIFICATIONS]
Item
Module
Module size
Outside diameter
Casing diameter
Height
Display medium
Liquid crystal driving system
Display system
Additional mechanism
Loss/gain
Regulation system
Measuring gate by quartz tester
Battery
Cal. S140A, S143A
Cal. No.
The illustrations refer to Cal. S143A.
49.3 mm between 6 o'clock and 12 o'clock sides
43.0 mm between 3 o'clock and 9 o'clock sides
8.75 mm
Nematic Liquid Crystal, FEM (Field Effect Mode)
1/4 multiplex driving system
• Stopwatch display (Up to 10 hours)
Split time/lap time measurement
Total time measurement/lap time measurement in progress
• Time/calendar display
• Stroke display (Only for Cal. S140A)
• Memory function: Up to 300 measurements
• Memory capacity indicator
• Confirmation sound for watch operation
• Contrast adjustment function
• Battery life indicator
• Printout function (Only for Cal. S143A)
±0.0006% at normal temperature range (corresponds to a loss/gain
(monthly rate) of less than 15 seconds)
Nil
Any gate can be used.
SEIKO CR2430, Sony CR2430
Battery life is approximately 3 years.
(When the stopwatch is used for 3 hours a day or less)
Voltage: 3.0 V
S140A
S143A
(x 0.7)
1

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Summary of Contents for Seiko S140A

  • Page 1 Split time/lap time measurement • Total time measurement/lap time measurement in progress • • Time/calendar display • Stroke display (Only for Cal. S140A) Additional mechanism • Memory function: Up to 300 measurements • Memory capacity indicator • Confirmation sound for watch operation •...
  • Page 2: Parts Catalogue

    PARTS CATALOGUE Cal. S140A, S143A → Disassembling procedures Figs. : → Reassembling procedures Figs. : Lubricating: Types of oil Oil quantity SEIKO Watch Oil S-6 Normal quantity Battery (See the Silicone oil 500,000 front page.) 0022 922 Circuit block cover screw...
  • Page 3: Technical Guide

    “SEIKO Casing Parts Catalogue” to choose a corresponding liquid crystal panel. TECHNICAL GUIDE Cal. S140A, S143A • The explanation here is only for the particular points of Cal. S140A and S143A. • For the repairing, checking and measuring procedures, refer to the “TECHNICAL GUIDE, GENERAL INSTRUCTIONS”.
  • Page 4 TECHNICAL GUIDE Cal. S140A, S143A • Remarks after installing the battery After the battery is replaced with a new one, or after the battery is re-installed following the repairing procedures, be sure to short-circuit the AC terminal of the circuit block and the circuit block cover with conductive tweezers for more than 2 seconds as illustrated at right to reset the circuit.
  • Page 5 TECHNICAL GUIDE Cal. S140A, S143A Switch lever • Setting position and lubricating Lubricate the switch levers as shown in the illustrations below and set them on the rear of the circuit block case. Set the switch lever so that the portions from “a”...
  • Page 6 TECHNICAL GUIDE Cal. S140A, S143A • All the segments lit up Press the mode button (button “D”) to show the TIME/CALENDAR mode. Press button “B” to show the TIME/CALENDAR SETTING display. Press buttons “A” and “B” at the same time. All the segments of the display will light up.
  • Page 7 * If the printer will not operate properly after correcting the above conditions, take both the printer and the stopwatch to a SEIKO SERVICE CENTER for repair. * Please be informed that the repairs of the System Printer SP12 will be made only at the SEIKO factory.
  • Page 8: Buttons And Displays

    BUTTONS AND DISPLAYS Cal. S140A Cal. S140A Button C (CONTRAST) [TIME/CALENDAR mode] Activation/deactivation of the contrast adjustment function Button A (SET) Button B (SELECT) Setting the digits to be adjusted Selection of the digits to be adjusted Year Identification number...
  • Page 9 BUTTONS AND DISPLAYS Cal. S143A Cal. S143A [TIME/CALENDAR mode] Button C (CONTRAST) Activation/deactivation of the contrast adjustment function Button A (SET) Button B (SELECT) Setting the digits to be adjusted Selection of the digits to be adjusted Year Identification number Month and date Time It is displayed in the 24-hour indication.
  • Page 12 2000-4 Printed in Japan...

This manual is also suitable for:

S143a